<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        padding: 0;
        margin: 0;
        caret-color: transparent;
      }
      .content {
        padding: 30px;
        width: 400px;
        height: 500px;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: repeat(5, 1fr);
        gap: 10px;
      }
      .key {
        border-radius: 6px;
        box-shadow: 3px 3px 9px #828282, -3px -3px 9px #fff;
        font-size: 20px;
        display: flex;
        text-align: center;
        justify-content: center;
        align-items: center;
      }
      .key:active {
        box-shadow: 3px 3px 10px #a4a4a4, -3px -3px 9px #efebeb;
      }
      .content .key:nth-child(8) {
        grid-row: 2/4;
        grid-column: 4/5;
      }
      .content .key:nth-child(15) {
        grid-row: 4/6;
        grid-column: 4/5;
      }
      .content .key:nth-child(16) {
        grid-row: 5/6;
        grid-column: 1/3;
      }
    </style>
  </head>
  <body>
    <div class="content">
      <div class="key">Num Lock</div>
      <div class="key">/</div>
      <div class="key">*</div>
      <div class="key">-</div>
      <div class="key">7</div>
      <div class="key">8</div>
      <div class="key">9</div>
      <div class="key">+</div>
      <div class="key">4</div>
      <div class="key">5</div>
      <div class="key">6</div>
      <div class="key">1</div>
      <div class="key">2</div>
      <div class="key">3</div>
      <div class="key">Enter</div>
      <div class="key">0</div>
      <div class="key">.</div>
    </div>
  </body>
</html>
